It turns out that much if what we learned at school with regard to color vision was wrong. For example, we do NOT have red, green, and blue color receptors in our eyes!
I don’t know about you, but I tend to get enthused when I start learning something new. A few weeks ago I was working on a paper on computer displays (for my own amusement) when I was shocked to discover that we do NOT have red, green, and blue color receptors in our eyes (instead we have bluish-violet, bluish-green, and yellowish-green receptors).
Next, I was introduced to a mega-cool paper claiming that it's possible to achieve photo-realistic images using only 17 bits per pixel (5 red, 7 green, and 5 blue), and that we can even get by with 12 bits at a pinch (4 red, 5 green, and 3 blue). All of this is covered in a column I just penned in EE Times called Challenging how we perceive color.
However, I actually wrote this column a couple of weeks ago, and I've learned so much more since then, including who discovered infrared (and how), who discovered ultraviolet (and how), and how our visual systems evolved over time. For example, the primary color system used by almost all known animals and insects was based on two color receptors: blue and yellow. This is the system that is still used by dogs, which are therefore known as dichromats (unlike most humans with three color receptors who are classed as trichromats, and a few special individuals with four color receptors who are known as tetrachromats). If you are interested in learning more, please feel free to peruse and ponder my main Color Vision paper and let me know what you think by emailing me at firstname.lastname@example.org
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